package com.briup.smartcity_group1.web.aop;

import com.briup.smartcity_group1.utils.result.Result;
import com.briup.smartcity_group1.utils.result.ResultUtils;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**RestController 统一格式返回
 * @author congee(congee02 @ 163.com)
 * @date 1/3/2023 4:14 PM
 */
// 必须声明 basePackages，不然会统一所有 controller 的返回
@RestControllerAdvice(basePackages = {"com.briup.smartcity_group1.web.controller"})
public class UnifiedReturnFormatRestControllerAdvice implements ResponseBodyAdvice<Object> {

    @Override
    public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        if (body instanceof Result) {
            return body;
        }
        if (body == null) {
            return ResultUtils.success(true);
        }
        return ResultUtils.success(body);
    }
}
